Verse 82

وَنُنَزِّلُ مِنَ ٱلْقُرْءَانِ مَا هُوَ شِفَآءٌ وَرَحْمَةٌ لِّلْمُؤْمِنِينَ وَلَا يَزِيدُ ٱلظَّـٰلِمِينَ إِلَّا خَسَارًا

And what is revealed from the Quran is a healing and mercy for the faithful and does not increase anything for the unjust, except loss.